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參數(shù)資料
| 型號： | DS1339U-3+T&R |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 5/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC RTC I2C W/ALARM 8-USOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 類型： | 時鐘/日歷 |
| 特點： | 警報器，閏年，方波輸出，涓流充電器 |
| 時間格式： | HH:MM:SS（12/24 小時） |
| 數(shù)據(jù)格式： | YY-MM-DD-dd |
| 接口： | I²C，2 線串口 |
| 電源電壓： | 2.7 V ~ 3.3 V |
| 電壓 - 電源，電池： | 1.3 V ~ 3.7 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-uMAX |
| 包裝： | 帶卷 (TR) |
DS1339 I
2C Serial Real-Time Clock
13 of 20
Table 4. Alarm Mask Bits
DY/
DT
ALARM 1 REGISTER MASK BITS
(Bit 7)
ALARM RATE
A1M4
A1M3
A1M2
A1M1
X
1
Alarm once per second
X
1
0
Alarm when seconds match
X
1
0
Alarm when minutes and seconds match
X
1
0
Alarm when hours, minutes, and seconds match
0
Alarm when date, hours, minutes, and seconds
match
1
0
Alarm when day, hours, minutes, and seconds match
DY/
DT
ALARM 2 REGISTER MASK BITS
(Bit 7)
ALARM RATE
A2M4
A2M3
A2M2
X
1
Alarm once per minute (00 sec. of every min.)
X
1
0
Alarm when minutes match
X
1
0
Alarm when hours and minutes match
0
Alarm when date, hours, and minutes match
1
0
Alarm when day, hours, and minutes match
SPECIAL-PURPOSE REGISTERS
The DS1339 has two additional registers (control and status) that control the RTC, alarms, and square-wave
output.
CONTROL REGISTER (0Eh)
BIT 7
BIT 6
BIT 5
BIT 4
BIT 3
BIT 2
BIT 1
BIT 0
EOSC
0
BBSQI
RS2
RS1
INTCN
A2IE
A1IE
Bit 7: Enable Oscillator
(EOSC). This bit when set to logic 0 starts the oscillator. When this bit is set to a logic 1,
the oscillator is stopped. This bit is enabled (logic 0) when power is first applied.
Bit 5: Battery-Backed Square-Wave and Interrupt Enable (BBSQI). This bit when set to a logic 1 enables the
square wave or interrupt output when VCC is absent and the DS1339 is being powered by the VBACKUP pin. When
BBSQI is a logic 0, the SQW/
INT pin goes high impedance when V
CC falls below the power-fail trip point. This bit is
disabled (logic 0) when power is first applied.
Bits 4 and 3: Rate Select (RS2 and RS1). These bits control the frequency of the square-wave output when the
square wave has been enabled. Table 5 shows the square-wave frequencies that can be selected with the RS bits.
These bits are both set to logic 1 (32kHz) when power is first applied.
Table 5. SQW/
INT Output
INTCN
RS2
RS1
SQW/
INT
OUTPUT
A2IE
A1IE
0
1Hz
X
0
1
4.096kHz
X
0
1
0
8.192kHz
X
0
1
32.768kHz
X
1
X
A1F
0
1
X
A2F
1
0
1
X
A2F + A1F
1
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS1340 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C RTC with Trickle Charger |
| DS1340_06 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C RTC with Trickle Charger |
| DS1340_11 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C RTC with Trickle Charger |
| DS1340-3 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:I2C RTC with Trickle Charger |
| DS1340C-18 | 功能描述:實時時鐘 I2C RTC w/Trickle Charger RoHS:否 制造商:Microchip Technology 功能:Clock, Calendar. Alarm RTC 總線接口:I2C 日期格式:DW:DM:M:Y 時間格式:HH:MM:SS RTC 存儲容量:64 B 電源電壓-最大:5.5 V 電源電壓-最小:1.8 V 最大工作溫度:+ 85 C 最小工作溫度: 安裝風(fēng)格:Through Hole 封裝 / 箱體:PDIP-8 封裝:Tube |
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